Prova1 Fluidos Resps
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Transcript of Prova1 Fluidos Resps
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8/19/2019 Prova1 Fluidos Resps
1/2
C l
L = 12
ρv2A C l(α)
C l =
C l =
C l =
8, 3 m 11 m 2, 7 m 16, 5 m2
1, 5 m 1.100 kg 63 m/s 35m/s 24 m/s 84 m/s
1000 m
1, 0 kg/m3
C l/C d 9 120 kW
L = 12
ρv2AC l C l = 2mgρv2A
C l = 0, 329 C l = 0, 185 C l = 2, 268.
∆ p = ∆v =
F = ∆ p A = mg, A
∆ p = mg
A = 653 P a.
∆ p = 12
ρ
v2s − v
2
i
∆v = vs − vi =
2∆ p
ρ + v2i − vi = 9, 8 m/s.
0, 3L 2, 1g/cm3 0, 2L 1, 5g/cm3 0, 1L 1g/cm3
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8/19/2019 Prova1 Fluidos Resps
2/2
0, 3 ×103cm3 × 2, 1g/cm3 = 630g 300g 100g 1, 03kg 10, 09N
ρ
p
L
dA = dz L F =
´ p(z)dA p(z) = ρgz F =´ p
0 ρgz Ldz = 1
2ρgLp2
1.200kg. 5.000m3.
0, 16 kg/m3 0, 08 kg/m3 1, 2 kg/m3
M estrutura = ∆M =
5.000m3 5.000 × (1, 2 − 0, 16) = 5200 kg M estrutura = 5.200 kg. 5.000 × (1, 20 − 0, 08) = 5.600 kg. 400kg